Battery charger



FIG. 1 is a top perspective view of a battery charger showing our newdesign;

FIG. 2 is a right side view thereof, it being understood that the leftside is a mirror image of the right side;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof.

The broken line showing is included for the purpose of illustratingenvironmental features and forms no part of the claimed design.

The ornamental design for a battery charger, as shown described.